Test 2 Plants Review Flashcards
What is the study of plants called?
Botany
What is the literal meaning of plant or herb?
Wort
What is the study of trees called?
Dedrology
In general, which plants live longer, herbaceous or woody?
Woody
What is the young leaf bearing portion of a plant called?
Shoot
What do roots do?
Anchor- add nitrogen, humus, and take in water and nutrients
What do leaves do?
Photosynthesis, add humus and insulate
What do stems do?
Conduct and support
What three structures connect to the axis of a stem?
Leaves, branches, flowers
Describe an opposite leaf attachment
Directly across from each other
Describe an alternate leaf attachment
Not directly across from each other
Describe a whorled leaf attachment
Three leaves or more attached at one point
What are the “eyes” of a potato?
Nodes
What is the difference in a petiolate and sessile leaf?
Petio has petio. Sessile doesn’t.
What is in the bud?
Primordial tissue
Where are terminal buds found?
Branch tips
Where are axillary buds found?
Angle of petiole and stem
What protects buds?
Bud scales/scoves
What is left when bud scales fall off?
Scars
What are stipules?
Leaf appendages
What are leaf scars?
Deciduous trees- vascular bundle remnant; form when leaf falls
Name a tree high in lenticels
Cherry tree
Which is more abundant in stems, cortex or pith?
Pith
What is another name for secondary xylem?
Wood
What is the remnant of the cambium called?
Annual/Growth ring
How does heartwood and sapwood differ?
Heart is dark, sap is light
What is unique to conifer stems?
Resin ducts
How does softwood and hardwood differ?
Hardwood has rays, softwood lacks
Give an example of softwood
Pine
Give an example of hardwood
Oak
Define and give an example of a rhizome
Horizontal underground stem. Ex: Iris
Define and give an example of a stolon
Runners
Ex: Bermuda grass, potato, kudzu
Define and give an example of a bulb
Grows in layers
Ex: Tulip and Daffodils
Define and give an example of a corm
Has stored starch so during the growing season corms shrink
Ex: Gladiolus
Define and give an example of a tuber
Starchy accumulations
Ex: potato
What is the difference in a thorn and a spine?
Thorns are modified branches. Spines are modified leaves.
Where are apical meristems found? What do they increase?
In the tip of a root and tip of a branch. Increase the length.
What type of plant has cork cambium?
Woody
Which group of plants have intercalary meristems?
Monocots/herbaceous plants
What is the epidermis of a plant?
Covering
What does xylem do?
Transports water
What does phloem do?
Transports food
What term describes roots that are not in the soil?
Adventitious
What area of the root gives rise to root branches?
Endodermis
What area of the root gives rise to root hairs?
Epidermis
List the 4 areas of the developing root
root cap, region of cell division (mitosis), region of elongation, and region of maturation
How can the region of elongation be differentiated from the region of maturation?
At the first root hair
Which region of the developing root is the meristematic region?
Region of mitosis/cell division
Are roots higher in cortex or pith?
Cortex
What does “imbibe” mean?
To drink
What structure is unique to roots?
Have a cap, endodermis, and hairs
What does heliotrophic mean?
They track the sun
What is humus?
Rotting organic matter
How do leaves “insulate” the soil?
Leaf litter covers the soil
Differentiate between simple and compound leaves.
Simple leaves have one blade and compound leaves have many blades
What is the largest leaf?
Raffia palm (65 feet)
What is the smallest leaf?
Aspargus (microscopic)
What does pinnate mean?
Featherlike
What does palmate mean?
Finger of the palm
What group of plants have parallel veination?
Monocots
What group of plants have branched veination?
Dicots
What living plant has dichotomus veination?
Gingko
What does dichotomus mean?
Fork
Is a hickory leaf simple or compound?
Compound
What are the two areas of leaf histology?
Dermal tissue and mesodermal tissue
What are the two layers of the dermal tissue?
Epidermis and cuticle
What secretes the cuticle?
Epidermis
What does the cuticle do?
Prevents desiccation
What group of plants have bulliform cells?
Monocot leaves
What do guard cells surround?
Stoma
What is the function of stoma?
Absorbs gas
What are the two regions of the mesoderm?
*
What is the function of the palisade region?
Photosynthesis
What is the function of the spongy region?
Gas exchange
What are pitcher plants?
Plants that traps and eats insects
What is a fascicle?
“Bundle”